Super Pumped: The Battle for Uber Highlight

a group of employees built a prototype Uber driver app that repurposed certain parts of a driver’s smartphone—specifically, the accelerometer and gyroscope—to detect the sound of notifications that came from the Lyft app. If Uber knew that a driver worked for Lyft, Uber could market itself differently to the driver—likely with cash bonuses—to entice them away from the pink moustache.